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Stepwise selection on homeologous PRR genes controlling flowering and maturity during soybean domestication

journal contribution
posted on 2023-05-21, 03:20 authored by Lu, S, Dong, L, Fang, C, Liu, S, Kong, L, Cheng, Q, Chen, L, Su, T, Nan, H, Zhang, D, Zhang, L, Wang, Z, Yang, Y, Yu, D, Liu, X, Yang, Q, Lin, X, Tang, Y, Zhao, X, Yang, X, Tian, C, Xie, Q, Li, X, Yuan, X, Tian, Z, Liu, B, James WellerJames Weller, Kong, F

Adaptive changes in plant phenology are often considered to be a feature of the so-called ‘domestication syndrome’ that distinguishes modern crops from their wild progenitors, but little detailed evidence supports this idea. In soybean, a major legume crop, flowering time variation is well characterized within domesticated germplasm and is critical for modern production, but its importance during domestication is unclear. Here, we identify sequential contributions of two homeologous pseudo-response-regulator genes, Tof12 and Tof11, to ancient flowering time adaptation, and demonstrate that they act via LHY homologs to promote expression of the legume-specific E1 gene and delay flowering under long photoperiods. We show that Tof12-dependent acceleration of maturity accompanied a reduction in dormancy and seed dispersal during soybean domestication, possibly predisposing the incipient crop to latitudinal expansion. Better understanding of this early phase of crop evolution will help to identify functional variation lost during domestication and exploit its potential for future crop improvement.

Funding

Australian Research Council

History

Publication title

Nature Genetics

Volume

52

Pagination

428-436

ISSN

1061-4036

Department/School

School of Natural Sciences

Publisher

Nature Publishing Group

Place of publication

345 Park Ave South, New York, USA, Ny, 10010-1707

Rights statement

© The Author(s), under exclusive licence to Springer Nature America, Inc. 2020

Repository Status

  • Restricted

Socio-economic Objectives

Barley; Grain legumes; Expanding knowledge in the biological sciences

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